US6544309B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cooling an electric module and a technical appliance
Assignee: Nokia Solutions and Networks GmbH and Co KG
•
Filing: 2000-04-12
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Granted: 2003-04-08
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Expires: 2020-04-12
Abstract
Abstract An apparatus having at least one membrane filter for a superficial filtering of at least dirt particles from inflowing cooling air for cooling an electrical module and also at least one cooling device for establishing an air flow in the housing and for discharging the heated-up cooling air out of the housing from at least one air outlet, the membrane filter associated with a vibration generator to undergo a mechanical vibration which causes the dirt particles deposited on the surface to be dislodged.
Inventors
- 👤 Bruno Hoefer
- 👤 Guido Reeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:25
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/207; H05K7/20009; H05K7/20136; H05K7/20181
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
142 words
An apparatus for cooling an electrical module, comprising: a housing, wherein the electrical module is positioned inside the housing; at least one membrane filter positioned in an air inlet of the housing, the membrane filter providing filtering of at least dirt particles from inflowing air for cooling the electrical module; at least one vibration generator associated with the at least one membrane filter, the at least one vibration generator causing the at least one membrane filter to undergo a mechanical vibration to cause the dirt particles deposited on a surface of the at least one membrane filter to be dislodged; and at least one cooling device for establishing an air flow in the housing and for discharging filtered cooling air, which is heated up upon flowing through and around the electrical module, out of at least one air outlet of the housing.
Claim 2
Independent Claim
142 words
An apparatus for cooling an electrical module, comprising: a housing, wherein the electrical module is positioned inside the housing; at least one membrane filter positioned in an air inlet of the housing, the membrane filter providing filtering of at least dirt particles from inflowing air for cooling the electrical module; at least one vibration generator associated with the at least one membrane filter, the at least one vibration generator causing the at least one membrane filter to undergo a mechanical vibration to cause the dirt particles deposited on a surface of the at least one membrane filter to be dislodged; and at least one cooling device for establishing an air flow in the housing and for discharging filtered cooling air, which is heated up upon flowing through and around the electrical module, out of at least one air outlet of the housing.
Claim 3
Dependent Claim
23 words
An apparatus for cooling an electrical module as claimed in claim 1 , wherein the membrane filter separates out liquids at the surface.
Claim 4
Dependent Claim
31 words
An apparatus for cooling an electrical module as claimed in claim 1 , wherein the mechanical vibration has a frequency which corresponds to a natural resonant frequency of the membrane filter.
Claim 5
Dependent Claim
29 words
An apparatus for cooling an electrical module as claimed in claim 1 , wherein the vibration generator is an electrodynamic transducer which is mechanically connected to the membrane filter.
Claim 6
Dependent Claim
27 words
An apparatus for cooling an electrical module as claimed in claim 1 , wherein the vibration generator is an electromagnetic transducer mechanically connected to the membrane filter.
Claim 7
Dependent Claim
27 words
An apparatus for cooling an electrical module as claimed in claim 1 , wherein the vibration generator is an electromechanical transducer mechanically connected to the membrane filter.
Claim 8
Dependent Claim
21 words
An apparatus for cooling an electrical module as claimed in claim 6 , wherein the electromechanical transducer is a piezoelectric transducer.
Claim 9
Dependent Claim
59 words
An apparatus for cooling an electrical module as claimed in claim 1 , further comprising: two capacitor plates, wherein the vibration generator is an electrostatic transducer and the membrane filter is formed of an electrically conductive material positioned between the two capacitor plates, an electrostatic force between the two capacitor plates effecting the mechanical vibration of the membrane filter.
Claim 10
Dependent Claim
29 words
An apparatus for cooling an electrical module as claimed in claim 8 , wherein the two capacitor plates are respectively formed of a netting of an electrically conductive material.
Claim 11
Dependent Claim
54 words
An apparatus for cooling an electrical module as claimed in claim 1 , wherein the vibration generator is an electrostatic transducer, the membrane filter is formed from an electrically conductive material as one of two capacitor plates, and an electrostatic force between the two capacitor plates effects the mechanical vibration of the membrane filter.
Claim 12
Dependent Claim
47 words
An apparatus for cooling an electrical module as claimed in claim 1 , further comprising: a control device for activating the vibration generator, the activation occurring on a basis which is at least one of periodic and determined by a degree of soiling of the membrane filter.
Claim 13
Dependent Claim
37 words
An apparatus for cooling an electrical module as claimed in claim 1 , wherein the apparatus is incorporated into a base station of at least one of a mobile radio system and a wireless subscriber line system.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-04-07 | 2006-10-07 | 2007-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-04-07 | 2010-10-07 | 2011-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-04-07 | 2014-10-07 | 2015-04-08 | $7700.00 | Window Closed / Lapsed |